> For the complete documentation index, see [llms.txt](https://help.proxidize.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.proxidize.com/proxidize-rest-api/proxidize-api/residential-pergb-api/whitelisting.md).

# Whitelisting

Use whitelisting to limit Residential proxy access to approved source IPs.

Whitelisting controls **who can connect**.

Country, city, and carrier control **where the proxy exits from**.

To add or update allowed IPs, use [IP Whitelist](/proxidize-rest-api/proxidize-api/residential-pergb-api/whitelisting/ip-whitelist.md).

### Format requirements

When you pass `country`, `city`, or `carrier`, use the values returned by the lookup APIs.

Use [Locations (Per Carrier)](/proxidize-rest-api/proxidize-api/residential-pergb-api/locations-per-carrier.md) to fetch valid country and city values.

Example response:

```json
[
  {
    "country": {
      "name": "Spain",
      "value": "-co-Spain",
      "locations": [
        {
          "label": "Adra, Andalusia",
          "value": "-co-Spain-st-Andalusia-ci-Adra",
          "country": "Spain",
          "state": "Andalusia",
          "city": "Adra"
        },
        {
          "label": "Aguadulce, Andalusia",
          "value": "-co-Spain-st-Andalusia-ci-Aguadulce",
          "country": "Spain",
          "state": "Andalusia",
          "city": "Aguadulce"
        }
      ]
    }
  }
]
```

Use:

* `country: Spain`
* `city: Adra`

### Get the correct carrier format

Use [Carriers (Per Location)](/proxidize-rest-api/proxidize-api/residential-pergb-api/carriers-per-location.md) with the `location` query parameter.

Then use the returned carrier `value`.

Example response:

```json
[
  {
    "name": "AS174 Cogent Communications, LLC",
    "country": "Spain",
    "value": "174",
    "available": true
  }
]
```

Use:

* `carrier: 174`

### Example

If you want Spain, Adra, Andalusia, and carrier AS174, use:

```
country=Spain
city=Adra
carrier=174
```


---

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